Bug in HAL_CRC Module

[MechatronikMonkey]

I found a bug the HAL CRC Module...

First of all... when you enable the CRC Module with CubeMX 5.0.1 the MX_CRC_Init() is empty and the peripheral is not initalized!

I wrote all the code manualy or copied it from the old CubeMX 4 generated code...

This worked BUT... when using hcrc.Init.CRCLength = HAL_CRC_LENGTH_8B the CRC->CR->POLYSIZE Register is set wrong. It is set to 0x01 what means 16 Bit CRC and not 0x02 wicht would be 8 Bit.

When you use hcrc.Init.CRCLength = HAL_CRC_LENGTH_16B; the CR->POLYSIZE Register is set to 8 Bit (0x02)... so it seems to be flipped arround...

I did no further investigation on this bug... dont know where the problem realy is...

But i guess, this is STs task.

Best regards

[Imen.D]

Hello,

Can you please share your ioc file for check.

Kidn Regards,

Imen

[WBOUG]

Hello @Christopher Müller​ 

Can you please share your ioc file or your MCU for check.

Best Regards,

Wael

[MechatronikMonkey]

..

[WBOUG]

Hi @Christopher Müller​ 

Your request has been sent to the development team. it will fix in the next version CubeMX

Best Regards,

Wael

[MechatronikMonkey]

Please be aware of that it is NOT ONLY a problem with the cube MX but also the HAL itself!

hcrc.Init.CRCLength = HAL_CRC_LENGTH_8B comes from HAL not from Cube MX... and this sets the register of STM32L082 wrong. It is a bug in HAL.

[WBOUG]

Yes I made a total description of what you want.